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Strong ExB Shear Flows in the Transport-Barrier Region in H-Mode Plasma

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Xia, Hua; Shats, Michael; Punzmann, Horst

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We report the first experimental observation of stationary zonal flow in the transport-barrier region of the H-mode plasma. Strong peaks in Er shear mark the width of this region. A strong m=n=0 low-frequency (f<0.6kHz) zonal flow is observed in regions of increased Er, suggesting a substantial contribution of zonal flow to the spatial modulation of Er radial profiles. Radial localization of the zonal flow is correlated with a region of zero magnetic shear and low-order (7/5) rational surfaces.

dc.contributor.authorXia, Hua
dc.contributor.authorShats, Michael
dc.contributor.authorPunzmann, Horst
dc.date.accessioned2015-12-07T22:26:59Z
dc.identifier.issn0031-9007
dc.identifier.urihttp://hdl.handle.net/1885/21682
dc.description.abstractWe report the first experimental observation of stationary zonal flow in the transport-barrier region of the H-mode plasma. Strong peaks in Er shear mark the width of this region. A strong m=n=0 low-frequency (f<0.6kHz) zonal flow is observed in regions of increased Er, suggesting a substantial contribution of zonal flow to the spatial modulation of Er radial profiles. Radial localization of the zonal flow is correlated with a region of zero magnetic shear and low-order (7/5) rational surfaces.
dc.publisherAmerican Physical Society
dc.sourcePhysical Review Letters
dc.subjectKeywords: Correlation methods; Magnetic fluids; Shear flow; Surface properties; Transport properties; H-mode plasma; Stationary zonal flow; Transport barrier region; Zero magnetic shear; Plasma flow
dc.titleStrong ExB Shear Flows in the Transport-Barrier Region in H-Mode Plasma
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume97
dc.date.issued2006
local.identifier.absfor091508 - Turbulent Flows
local.identifier.absfor020303 - Fluid Physics
local.identifier.ariespublicationu4048219xPUB18
local.type.statusPublished Version
local.contributor.affiliationXia, Hua, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationShats, Michael, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationPunzmann, Horst, College of Physical and Mathematical Sciences, ANU
local.description.embargo2037-12-31
local.bibliographicCitation.issue23
local.bibliographicCitation.startpage255003-1-4
local.identifier.doi10.1103/PhysRevLett.97.255003
dc.date.updated2015-12-07T09:48:14Z
local.identifier.scopusID2-s2.0-33845737510
CollectionsANU Research Publications

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